Electronic devices and methods for near field communication

Abstract

An electronic device includes a secure element, a touch sensor and a touch sensor controller. The secure element generates a security code for a trusted transaction. The touch sensor includes transmitting electrodes and receiving electrodes configured for sensing touch events on a touch-sensitive area of the electronic device. The touch sensor controller is coupled to the secure element and the touch sensor and controls operations of the touch sensor. The secure element further transmits the security code to the touch sensor controller and the touch sensor controller transmits the security code via the transmitting electrodes.

What is claimed is: 
     
         1 . An electronic device, comprising:
 a secure element, generating a security code for a trusted transaction;   a touch sensor, comprising a plurality of transmitting electrodes and a plurality of receiving electrodes configured for sensing touch events on a touch-sensitive area of the electronic device; and   a touch sensor controller, coupled to the secure element and the touch sensor and controlling operations of the touch sensor,   wherein the secure element further transmits the security code to the touch sensor controller and the touch sensor controller transmits the security code via the transmitting electrodes.   
     
     
         2 . The electronic device as claimed in  claim 1 , further comprising:
 a processor, determining whether to enter a security mode for the trusted transaction and transmitting a request for the trusted transaction to the secure element when the processor determines to enter the security mode,   wherein the secure element generates the security code in response to the request.   
     
     
         3 . The electronic device as claimed in  claim 1 , wherein the security code embeds information regarding a one-time password, a personal identity or a payment signature. 
     
     
         4 . The electronic device as claimed in  claim 1 , wherein the security code is a one-dimensional binary code. 
     
     
         5 . The electronic device as claimed in  claim 1 , wherein the security code is a two-dimensional binary code. 
     
     
         6 . The electronic device as claimed in  claim 2 , wherein in the security mode, the touch sensor controller is controlled by the secure element. 
     
     
         7 . The electronic device as claimed in  claim 2 , wherein the processor further transmits information regarding the trusted transaction to the secure element, and the secure element embeds the information regarding the trusted transaction in the security code. 
     
     
         8 . The electronic device as claimed in  claim 1 , wherein the trusted transaction is triggered by a touch event sensed by the touch sensor. 
     
     
         9 . The electronic device as claimed in  claim 1 , further comprising:
 a panel, configured for display image data; and   a panel driver, coupled to the secure element and the panel and driving the panel,   wherein the secure element further transmits the security code to the panel driver and the panel driver drives the panel to display the security code.   
     
     
         10 . The electronic device as claimed in  claim 9 , wherein the touch-sensitive area is configured on the panel. 
     
     
         11 . A near field communication method for use in an electronic device with at least a secure element to ensure security, comprising:
 generating a security code for a trusted transaction by the secure element; and   transmitting the security code to an air interface via a plurality of transmitting electrodes of the electronic device.   
     
     
         12 . The near field communication method as claimed in  claim 11 , further comprising:
 determining whether the electronic device has to enter a security mode for the trusted transaction; and   transmitting a request for the trusted transaction to the secure element when it is determined that the electronic device has to enter the security mode,   wherein the security code is generated in response to the request.   
     
     
         13 . The near field communication method as claimed in  claim 11 , wherein the security code embeds information regarding a one-time password, a personal identity or a payment signature. 
     
     
         14 . The near field communication method as claimed in  claim 11 , wherein the security code is a one-dimensional binary code. 
     
     
         15 . The near field communication method as claimed in  claim 11 , wherein the security code is a two-dimensional binary code. 
     
     
         16 . The near field communication method as claimed in  claim 11 , wherein the security code embeds information regarding the trusted transaction. 
     
     
         17 . The near field communication method as claimed in  claim 11 , wherein the trusted transaction is triggered by a touch event sensed by a touch sensor of the electronic device, and wherein the touch sensor comprises the transmitting electrodes and a plurality of receiving electrodes configured for sensing touch events on a touch-sensitive area of the electronic device. 
     
     
         18 . The near field communication method as claimed in  claim 11 , further comprising:
 displaying the security code on a panel of the electronic device.